Investigators say the girls, who were 12 at the time of the 2014 attack, plotted for months before luring the victim, who also was 12, into some woods and repeatedly stabbing her. The girls hoped killing her would please Slender Man, a demon-like character in online stories.

Both girls face an attempted homicide charge in adult court. Their attorneys had been fighting to move them into juvenile court but a state appeals court in July ruled they should remain in adult court.